Homicide 37: Seeking justice for Lance

Brendan McCarthy: "We need to chat with the people inside that house," he tells Wischan.

As Pardo approaches, a young woman in the door's threshold curses him. "Fat bitch," she calls the stocky detective. And people here won't talk to some cop, she assures.

Teens appear in the doorway, slam the door and scurry inside. The officers set up a perimeter around the block and wait.

Ten minutes later, several teens storm out defiantly. The detectives corral them.

A scream erupts from inside. Someone yells, "Don't do it!"

The it has detectives worried.

Pardo draws his gun. As a linebacker-size colleague crouches beside him, the detective moves onto the porch, wondering what's behind the door he's about…